Consider the following sequence: c_accaa_aa_bc_b

Consider the following sequence that follows some arrangement:

c_accaa_aa_bc_b

The letters that appear in the gaps are

  1. abba
  2. cbbb
  3. bbbb
  4. cccc

Answer

c_accaa_aa_bc_b

The groups are: ccacc, aabaa, bbcbb

The correct option is B.